Python calls to pulseGenerator* methods triggering NullPointerExceptions

What device(s) are you experiencing the problem on?
HTC Desire A8183

What firmware version are you running on the device?
2.1-update1

What steps will reproduce the problem?
1. Create a Python script in Sl4Ar2 using python_for_android_r1.apk
2. Create and run the following script:

import android
import time
droid = android.Android()
print droid.pulseGeneratorIsPlaying()
droid.pulseGeneratorRun()
droid.pulseGeneratorSetHz(200)
droid.pulseGeneratorSetHzPercent(50)
time.sleep(2)
droid.pulseGeneratorStop()

What is the expected output? What do you see instead?

I am not 100% sure of the API, but I would expect that 
droid.pulseGeneratorIsPlaying() would return False, and the rest would result 
in noise being generated at 200Hz for 2 seconds.

What actually happens is that the calls to the pulseGenerator* methods return 
the following errors:

print droid.pulseGeneratorIsPlaying()
  java.lang.NullPonterException
  Result(id=1, result=None, error=u'java.lang.NullPonterException')

droid.pulseGeneratorRun()
  java.lang.NullPointerException

droid.pulseGeneratorSetHz(200)
  com.googlecode.android_scripting.rpc.RpcError: Unknown RPC

droid.pulseGeneratorSetHzPercent(50)
  java.lang.NullPointerException

droid.pulseGeneratorStop()
  java.lang.NullPointerException

What version of the product are you using? On what operating system?
sl4a_r2.apk, python_for_android_r1.apk - both from 
http://code.google.com/p/android-scripting/downloads/list

The OS is Android 2.1

Please provide any additional information below.

LogCat's output for the final pulseGeneratorStop() is attached

Original issue reported on code.google.com by rwallh...@gmail.com on 8 Oct 2010 at 6:03

Attachments:

pulseGeneratorStop.txt

sinkuri256 / android-scripting

Python calls to pulseGenerator* methods triggering NullPointerExceptions #455